TY - JOUR T1 - Accuracy of clinical diagnosis versus echocardiography in evaluating heart murmurs. How to measure accuracy? JF - Saudi Medical Journal JO - Saudi Med J SP - 155 LP - 155 VL - 28 IS - 1 AU - Mustafa Afifi Y1 - 2007/01/01 UR - http://smj.org.sa/content/28/1/155.abstract ER -